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基于数值计算和实验测试方法的引风机烟气循环烟道设计方法探究 被引量:4
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作者 李乐乐 陈得胜 +2 位作者 石清鑫 郑金 董康田 《风机技术》 2019年第3期83-88,共6页
针对国内某330MW燃煤机组两台引风机,建立了一套基于数值计算和实验测试方法的烟气循环烟道设计体系。首先,根据引风机运行的安全性和经济性选取设计循环风量;然后,提出了9种烟气循环烟道设计方案,运用数值方法对9种方案进行比选,综合... 针对国内某330MW燃煤机组两台引风机,建立了一套基于数值计算和实验测试方法的烟气循环烟道设计体系。首先,根据引风机运行的安全性和经济性选取设计循环风量;然后,提出了9种烟气循环烟道设计方案,运用数值方法对9种方案进行比选,综合考虑确定采用设计方案5(φ=1.2m);最后,烟气循环烟道改造完成后,在300MW锅炉正常燃烧工况进行了现场热态性能实验。实验测试结果表明,设置烟气循环烟道后,循环烟道的循环风量、引风机运行安全性和经济性均能达到设计预期。 展开更多
关键词 引风机 烟气循环烟道 数值计算 试验测试 设计体系
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SOCA-DOM:A Mobile System-on-Chip Array System for Analyzing Big Data on the Move
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作者 le-le li Jiang-Yi liu +4 位作者 Jian-Ping Fan Xue-Hai Qian Kai Hwang Yeh-Ching Chung Zhi-Bin Yu 《Journal of Computer Science & Technology》 SCIE EI CSCD 2022年第6期1271-1289,共19页
Recently,analyzing big data on the move is booming.It requires that the hardware resource should be low volume,low power,light in weight,high-performance,and highly scalable whereas the management software should be f... Recently,analyzing big data on the move is booming.It requires that the hardware resource should be low volume,low power,light in weight,high-performance,and highly scalable whereas the management software should be flexible and consume little hardware resource.To meet these requirements,we present a system named SOCA-DOM that encompasses a mobile system-on-chip array architecture and a two-tier“software-defined”resource manager named Chameleon.First,we design an Ethernet communication board to support an array of mobile system-on-chips.Second,we propose a two-tier software architecture for Chameleon to make it flexible.Third,we devise data,configuration,and control planes for Chameleon to make it“software-defined”and in turn consume hardware resources on demand.Fourth,we design an accurate synthetic metric that represents the computational power of a computing node.We employ 12 Apache Spark benchmarks to evaluate SOCA-DOM.Surprisingly,SOCA-DOM consumes up to 9.4x less CPU resources and 13.5x less memory than Mesos which is an existing resource manager.In addition,we show that a 16-node SOCA-DOM consumes up to 4x less energy than two standard Xeon servers.Based on the results,we conclude that an array architecture with fine-grained hardware resources and a software-defined resource manager works well for analyzing big data on the move. 展开更多
关键词 edge computing mobile architecture resource management big data analytics software-defined systems
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